Abstract
The results of 1314 speckle interferometric observations of 625 binary stars, ranging in separation from 02 to 52 with a limiting secondary magnitude of V = 11, are tabulated. These observations were obtained using the 66 cm refractor at the US Naval Observatory in Washington, DC, with an intensified CCD detector. This is the fourth in a series of papers presenting measures obtained with this equipment and covers the period 1997 January 1 through December 31. Random errors for all measures are estimated to be 18 mas in separation and 057/ρ in position angle, where ρ is the separation in arcseconds.
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